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第 4 期              郑占模, 等: 二氧化硅纳米颗粒协同碳纤维增强复合材料防滑和耐磨性能研究                                      605


                    (a1)    Pure TPU             (b1)   SiO 2  NPs/TPU       (c1)  SiO 2  NPs/CF/TPU

                                      F                            F                            F
                               Water                       Water                        Water

                                     ZrO 2                        ZrO 2                        ZrO 2




                        Hydrophilic surface         Hydrophobic surface          Hydrophobic surface
                    (a2)                         (b2)                        (c2)
                            Water     ZrO 2                        ZrO 2                      ZrO 2
                         lubricating film             Meshing                            Meshing
                                           Asperity


                                            SiO 2                        SiO 2
                                                                         CF
                                         V                            V                           V
                      TPU                        Composite                   Composite
                    (a3)        Friction         (b3)        Friction        (c3)        Friction
                        Ripple deformation       Exfoliation  Crack               Filled CF
                                                                    Debris



                      TPU                        Composite                   Composite

                    (d1)                                              (d2)      Debonding   Matrix
                                               External stress                 and pull out  crack
                            Fiber
                                   Crack propagation direction
                     Matrix                                              Crack
                      crack                             Fracture         briding
                                            τ  Crack
                                               tip    processing zone
                                                                                           Crack tip

                                                                           Fiber
                              Breaking  Crack  Crack                       break
                                      briding  τ  pinning

                     Debonding                                                               20 μm
                     and pull out              External stress

             Fig. 10    Schematic diagram of the synergistically reinforcing effect of SiO 2  and CF on the antiskid and wear-resistant properties of
                    TPU composites: (a) pure TPU; (b) SiO 2 NPs/TPU; (c) SiO 2 NPs/CF/TPU; (d) the toughening mechanisms of CF
                          图 10    SiO 2 NPs与CF协同增强TPU基复合材料防滑性能与耐磨性能的机理图:(a)纯TPU;
                                      (b) SiO 2 NPs/TPU;(c) SiO 2 NPs/CF/TPU;(d) CF的增韧机理


                                                               [  3  ]   Bian  Guangyu,  Wu  Houzheng.  Friction  performance  of
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